SPEC
2 - 3 Transmission:
Primary reduction system Spur gear
Primary reduction ratio 67/18 (3.722)
Secondary reduction system Chain drive
Secondary reduction ratio 35/14 (2.500)
Transmission type Constant mesh, 3-speed
Operation Left foot operation
Gear ratio: 1st 37/13 (2.846)
2nd 33/19 (1.736)
3rd 28/23 (1.217)
Chassis:
Frame type Steel tube backbone
Caster angle 24.83°
Trail 56.0 mm (2.2 in)
Tire:
Type With tube
Size (front) 2.50-14 4PR
Size (rear) 3.00-12 4PR
Manufacturer (front and rear) CHENG SHIN
Type (front and rear) KNOBBY
Tire pressure (front and rear) 100 kPa (1.00 kgf/cm
2, 14.5 psi)
Brake:
Front brake type Drum brake
Operation Right hand operation
Rear brake type Drum brake
Operation Right foot operation
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (monocross suspension)
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel:
Front wheel travel 110 mm (4.33 in)
Rear wheel travel 95 mm (3.74 in)
Electrical:
Ignition system CDI
Generator system (TT-R90E) CDI magneto
Battery type (TT-R90E) GT4B-5
Battery voltage/capacity (TT-R90E) 12 V/2.5 AH
Specific gravity (TT-R90E) 1.350
GENERAL SPECIFICATIONS
3 - 3
INSP
ADJ
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation or practice, make sure the machine is in good operating condi-
tion.
Before using this machine, check the following points.
GENERAL INSPECTION AND MAINTENANCE
Item Routine Page
Brake Check operation/adjustment. P3-12
Engine oil Change oil as required. P3-6 ~ 8
Drive chain Check alignment/adjustment/lubrication. P3-13 ~ 15
Spark plug Check color/condition. P3-23
Throttle Check for proper throttle cable operation. P3-4
Air filter Foam type – must be clean and damp oil always P3-4 ~ 5
Wheels and tires Check pressure/runout/spoke tightness/bead stopper/axle nuts. P3-17 ~ 20
Fittings/fasteners Check all – tighten as necessary. P2-13
